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<title>VGS-视频网关服务</title>
<meta name="keywords"	content="gateway, sip, transcoder, gbt28181">
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<h1><img class="icon" src="vgs.png"> VGS</h1>
<h2>视频网关服务</h2>
<p>国标GBT28181视频监控系统到SIP视频会议的视频转换网关VGS.</p>
<p class="margin-bottom-20">VGS接收视频会议端的呼叫, 转发给GBT28181系统, 将GBT28181系统过来的流根据配置转码/转换为H.264 FU-A的RTP流.</p>
<p class="margin-bottom-20">视频转码由VTS转码服务完成. VGS可以对接多个VTS转码服务.</p>

<h2>功能特性</h2>

<h3><img src="star-16.png">跨平台, 支持Windows, Linux</h3>
<p>已部署在Windows 2008, Centos 6.5</p>
<h3><img src="star-16.png">支持PS流, H264流, 自动识别流格式</h3>
<p>自动识别PS流格式, 支持大华私有流, 海康私有流</p>
<h3><img src="star-16.png">支持转码服务堆叠</h3>
<p>VGS挂接多个VTS转码服务, 系统的转码能力灵活伸缩</p>
<h3><img src="star-16.png">终端能力集自动匹配转码</h3>
<p>根据终端呼叫的profile,level来做相应档次和码率的转码输出</p>
<h3><img src="star-16.png">帧率自适应控制</h3>
<p>服务器CPU占用较高时, 自动降低帧率输出, CPU占用较低时自动恢复</p>
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